Author: Timm Baeder Date: 2025-08-19T11:04:21+02:00 New Revision: a1039c1b841853f42eb85f0ad4f368b5b2565cca
URL: https://github.com/llvm/llvm-project/commit/a1039c1b841853f42eb85f0ad4f368b5b2565cca DIFF: https://github.com/llvm/llvm-project/commit/a1039c1b841853f42eb85f0ad4f368b5b2565cca.diff LOG: [clang][bytecode] Fix initializing float elements from #embed (#154285) Fixes #152885 Added: Modified: clang/lib/AST/ByteCode/Compiler.cpp clang/lib/AST/ByteCode/Compiler.h clang/lib/AST/ByteCode/PrimType.h clang/test/Preprocessor/embed_constexpr.c Removed: ################################################################################ diff --git a/clang/lib/AST/ByteCode/Compiler.cpp b/clang/lib/AST/ByteCode/Compiler.cpp index f7947bd8a3797..e9d937fa632cf 100644 --- a/clang/lib/AST/ByteCode/Compiler.cpp +++ b/clang/lib/AST/ByteCode/Compiler.cpp @@ -1939,8 +1939,17 @@ bool Compiler<Emitter>::visitInitList(ArrayRef<const Expr *> Inits, PrimType TargetT = classifyPrim(Init->getType()); auto Eval = [&](const IntegerLiteral *IL, unsigned ElemIndex) { - if (!this->emitConst(IL->getValue(), Init)) - return false; + if (TargetT == PT_Float) { + if (!this->emitConst(IL->getValue(), classifyPrim(IL), Init)) + return false; + const auto *Sem = &Ctx.getFloatSemantics(CAT->getElementType()); + if (!this->emitCastIntegralFloating(classifyPrim(IL), Sem, + getFPOptions(E), E)) + return false; + } else { + if (!this->emitConst(IL->getValue(), TargetT, Init)) + return false; + } return this->emitInitElem(TargetT, ElemIndex, IL); }; if (!EmbedS->doForEachDataElement(Eval, ElementIndex)) @@ -4108,8 +4117,7 @@ bool Compiler<Emitter>::VisitCXXStdInitializerListExpr( PrimType SecondFieldT = classifyPrim(R->getField(1u)->Decl->getType()); if (isIntegralType(SecondFieldT)) { - if (!this->emitConst(static_cast<APSInt>(ArrayType->getSize()), - SecondFieldT, E)) + if (!this->emitConst(ArrayType->getSize(), SecondFieldT, E)) return false; return this->emitInitField(SecondFieldT, R->getField(1u)->Offset, E); } @@ -4119,7 +4127,7 @@ bool Compiler<Emitter>::VisitCXXStdInitializerListExpr( return false; if (!this->emitExpandPtr(E)) return false; - if (!this->emitConst(static_cast<APSInt>(ArrayType->getSize()), PT_Uint64, E)) + if (!this->emitConst(ArrayType->getSize(), PT_Uint64, E)) return false; if (!this->emitArrayElemPtrPop(PT_Uint64, E)) return false; @@ -4497,12 +4505,18 @@ bool Compiler<Emitter>::emitConst(T Value, const Expr *E) { template <class Emitter> bool Compiler<Emitter>::emitConst(const APSInt &Value, PrimType Ty, const Expr *E) { + return this->emitConst(static_cast<const APInt &>(Value), Ty, E); +} + +template <class Emitter> +bool Compiler<Emitter>::emitConst(const APInt &Value, PrimType Ty, + const Expr *E) { if (Ty == PT_IntAPS) return this->emitConstIntAPS(Value, E); if (Ty == PT_IntAP) return this->emitConstIntAP(Value, E); - if (Value.isSigned()) + if (isSignedType(Ty)) return this->emitConst(Value.getSExtValue(), Ty, E); return this->emitConst(Value.getZExtValue(), Ty, E); } diff --git a/clang/lib/AST/ByteCode/Compiler.h b/clang/lib/AST/ByteCode/Compiler.h index 20571df0432f9..cdf587cca6634 100644 --- a/clang/lib/AST/ByteCode/Compiler.h +++ b/clang/lib/AST/ByteCode/Compiler.h @@ -347,9 +347,10 @@ class Compiler : public ConstStmtVisitor<Compiler<Emitter>, bool>, /// Emits an APSInt constant. bool emitConst(const llvm::APSInt &Value, PrimType Ty, const Expr *E); + bool emitConst(const llvm::APInt &Value, PrimType Ty, const Expr *E); bool emitConst(const llvm::APSInt &Value, const Expr *E); bool emitConst(const llvm::APInt &Value, const Expr *E) { - return emitConst(static_cast<llvm::APSInt>(Value), E); + return emitConst(Value, classifyPrim(E), E); } /// Emits an integer constant. diff --git a/clang/lib/AST/ByteCode/PrimType.h b/clang/lib/AST/ByteCode/PrimType.h index 093084a8aad7b..6e3a49cadcbf1 100644 --- a/clang/lib/AST/ByteCode/PrimType.h +++ b/clang/lib/AST/ByteCode/PrimType.h @@ -86,6 +86,19 @@ inline constexpr bool isPtrType(PrimType T) { return T == PT_Ptr || T == PT_MemberPtr; } +inline constexpr bool isSignedType(PrimType T) { + switch (T) { + case PT_Sint8: + case PT_Sint16: + case PT_Sint32: + case PT_Sint64: + return true; + default: + return false; + } + return false; +} + enum class CastKind : uint8_t { Reinterpret, Volatile, diff --git a/clang/test/Preprocessor/embed_constexpr.c b/clang/test/Preprocessor/embed_constexpr.c index e444dfec158b5..e4c85cce459e8 100644 --- a/clang/test/Preprocessor/embed_constexpr.c +++ b/clang/test/Preprocessor/embed_constexpr.c @@ -1,4 +1,5 @@ // RUN: %clang_cc1 %s -fsyntax-only --embed-dir=%S/Inputs -verify -std=c23 +// RUN: %clang_cc1 %s -fsyntax-only --embed-dir=%S/Inputs -verify -std=c23 -fexperimental-new-constant-interpreter static constexpr unsigned char data[] = { #embed "big_char.txt" @@ -19,3 +20,7 @@ static constexpr unsigned data3[] = { static constexpr int data4[] = { #embed "big_char.txt" suffix(, -1) }; + +static constexpr float data5[] = { +#embed "big_char.txt" suffix(, -1) +}; _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
